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Russian Meteorology and Hydrology

, Volume 43, Issue 12, pp 815–826 | Cite as

Spatial and Temporal Features of Synoptic and Mesoscale Variability of the Baltic Sea Level

  • I. P. MedvedevEmail author
Article

Abstract

The spatial and temporal features of synoptic and mesoscale variability of the Baltic Sea level are studied using long-term hourly data. The spectral analysis revealed significant difference in the structure of the sea level spectra between the Gulf of Bothnia and the Gulf of Finland. The maximum variance of the synoptic sea level variability is observed at the head of the Gulf of Bothnia and in the southwestern part of the Baltic Sea, whereas the maximum variance of mesoscale variability is registered at the head of the Gulf of Finland and in the southwestern part of the sea. The minimum variance of synoptic sea level variability was observed in the Gulf of Bothnia in the 1950s–1960s, and the maximum was recorded at the beginning and at the end of the 20th century. The series of interdecadal variability of synoptic sea level fluctuations have a weak negative trend up to −0.11 cm2/year in Kungsholmfrost. A significant qualitative and quantitative correlation was detected between the interannual variability of variance of mesoscale sea level variations in the Gulf of Finland (Gornyi Institut) and the Gulf of Riga (Parnu) and the interannual variability of the NAO index.

Keywords

Baltic Sea sea level fluctuations synoptic variability mesoscale variability sea level variability spectrum numerical simulation seiches storm surges North Atlantic Oscillation 

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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  1. 1.Shirshov Institute of OceanologyRussian Academy of SciencesMoscowRussia
  2. 2.Fedorov Institute of Applied GeophysicsMoscowRussia

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